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75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/*
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Copyright (c) 2016, Joo Aun Saw
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef LIBGPS_LOADER_H
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#define LIBGPS_LOADER_H
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#include "gps.h"
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// IMPORTANT: Remember to copy gps.h from gpsd when upgrading libgps version.
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#define LIBGPS_SO_VERSION "libgps.so.23"
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/** Structure containing all libgps information
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*/
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typedef struct
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{
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char *server;
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char *port;
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void *libgps_handle;
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int gpsd_connected;
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/* requires libgps (GPSD_API_MAJOR_VERSION >= 5) */
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gps_mask_t current_mask;
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struct gps_data_t gpsdata;
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/* libgps functions */
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int (*gps_read)(struct gps_data_t *);
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bool (*gps_waiting)(const struct gps_data_t *, int);
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int (*gps_open)(const char *, const char *, struct gps_data_t *);
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int (*gps_close)(struct gps_data_t *);
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const char *(*gps_errstr)(const int);
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int (*gps_stream)(struct gps_data_t *, unsigned int, void *);
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} gpsd_info;
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/* libgps */
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void gpsd_init(gpsd_info *gpsd);
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int libgps_load(gpsd_info *gpsd);
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void libgps_unload(gpsd_info *gpsd);
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/* gpsd */
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int connect_gpsd(gpsd_info *gpsd);
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int disconnect_gpsd(gpsd_info *gpsd);
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int wait_gps_time(gpsd_info *gpsd, int timeout_s);
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int read_gps_data_once(gpsd_info *gpsd);
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/* helper functions */
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int deg_to_str(double f, char *buf, int buf_size);
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extern const char *LIBGPS_FILE;
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#endif /* LIBGPS_LOADER_H */
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